期刊
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
卷 15, 期 16, 页码 5821-5830出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3cp44104k
关键词
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资金
- National Nature Science Foundation of China [21007021, 21076099, 21177050, 21206060]
- Natural Science Foundation of Jiangsu Province [BK2012717]
- Postdoctoral Foundation of China [2012M521014]
- Society Development Fund of Zhenjiang [SH2011011, SH2012020]
- Doctoral Innovation Fund of Jiangsu [CXLX12-0666]
A facile, one-step synthesis of carbon nanotube (CNT)-loaded Ag/AgBr is reported. The as-prepared samples were characterized by scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), UV/Vis absorption spectroscopy, Fourier transform infrared (FT-IR) spectroscopy, photoluminescence (PL) spectroscopy and electrochemical impedance spectroscopy (EIS). The CNT/Ag/AgBr composite exhibited much higher photocatalytic activity than pure Ag/AgBr in degrading methyl orange (MO) dye solution. The loading amount of CNT had a significant influence on the photoactivity of the CNT/Ag/AgBr composite. When the CNT loading amount was 1.4 at%, the hybrid material showed the highest photocatalytic ability. The result showed that a small amount of CNT was beneficial for photo-generated electron transfer, which could enhance the photoactivity of CNT/Ag/AgBr. The degradation dye solution was tested by liquid chromatography/mass spectrometry (LC/MS) and total organic carbon (TOC) analysis. Based on the results, the structure of the synthesized CNT/Ag/AgBr hybrid material was verified and the possible degradation path of the MO dye was proposed. A possible visible-light photocatalytic degradation mechanism was also discussed.
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